Seaming mechanism



J. PEYSER.

SEAMING MECHANISM. APPLICATION FILED JULY 13,1917. RENEWED FEB. 5, 1921.

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Patented Nov. 8, 1921.

2 SHEETS-SHEET 2.

5 wuzwlioz Jose 37 P ysen $5 w attorney UNITED STATES PATENT OFFICE.

JOSEPH PEYSER, OF MOUNT VERNON, NEW YORK, ASSIGNOR, 'BY -MESNE ASSIGN- MENTS, TO ACKERMANN MANUFACTURING COMPANY, OF WHEELING, WEST VIR- GINIA, A CORPORATION OF WEST VIRGINIA.

SEAMING MECHANISM.

' Application filed July 13, 1917, Serial No. 180,270. Renewed February 5, 1921.

ing-Mechanism, of which the following is a specification.

The present invention relates generally to can heading machines and has more particularly reference to a double seaming mechamsm;

produce a double seaming mechanism of simple and effective construction and one in which lubrication of the bearings for the seaming rollers may be effectively accomplished.

One feature of the invention resides in the means for bringing the seaming rollers into and out of operative position with respect to the work and consists in utilizing aseaming cam and a carrying member, one of said elements having a relatively rotating movement with respect tothe other; and in pro viding a pivotal support on which the carrying member swings bodily, together with means for effecting the swinging movement of the carrying member from the seaming cam, the swinging movement being controlled by said relative rotating movement so that constant engagement of the camand the means on the carrying member will automatically effect the bodily swinging movement of the carrying member in either direction from a neutral position.

In the preferred embodiment of the invention, the two seaming rollers are mounted diametrically opposite to each other so that the parts will naturally counter-balance each other without the use of extraneous or additional counterweights.

Another feature of the invention relates T to means that admits of a yielding move- --movement.

- roller, there is a rigid connection but the cam itself is provided with an elastic por- Specification of Letters Patent.

tion that admits of the roller passing over a raised part on the work. Preferably, sufficient elasticity is imparted to the cam by providing it with a slit in the body thereof. In the preferred embodiment of the invention, two seaming tools or rollers are provided which are arranged diametrically opposite to each other and which move in unison in two directions to and from the work to successively engage 1t. With these seaming tools is associated a seaming cam; and

p 7 means is provided for producing a relatively The main objects of this invention are to effective circumferential displacement between the tools and cam of one revolution during each cycle of the machine. The cam itself is provided with two sets of cam portions, each set consisting of an active and an'inactive portion arranged diametrically opposite to each other; and cam rolls are provided which are also arranged diametrically oppositeto each other and substantially in the plane of the seaming tools. In machines of this character, it is understood that the seaming tools and the work holder or chuck have a circumferential displacement with respect to each other amounting to many revolutions, say twenty-five, durin each cycle of the machine; and each of the active cam portions is provided with a dwell so that the seaming tool may remain in engagement with the work for a considerable time, preferably for more than one revolution of the work or of the seaming tools as the case may be. 7

A still further feature of the invention consists in providing a member, usually the carrying member for the tools, with a horizontal portion and with an upstanding annular flange, an annular seaming cam being mounted above said horizontal portion and within the flange and forming, with said elements, an oil reservoir from which oil flows to the bearings of the seaming rollers. The reservoir is preferably supplied with oil from a sleeve that extends through the machine and surrounds the member carrying the chuck.

In the accompanying drawings, the invention is disclosed in two forms: one, in which the work holder is stationary and the seaming tools have a rotating movement or chuck rotating and the tools stationary except-for the in-and-out movement toward and from the work. 2 7

Figure 1 is a vertical sectional view on the irregular lines 1, 1, of Fig. 2, viewing the stationary. It is, of course, understood that there is a similar member below thatic'ooperates with chuck 1 but which is not shown in this instance. 3 indicates a carrying member, here shown as being provided with a horizontal portion 4: and an upstanding annular flange 5 surrounding the same. This carrying member is supported on a pivotal member 6 carried by the lower end Tof the member '8." In this instance, the work holder and the carrier are given" a relatively circumferential displacement'witlr respectto each other, amounting to many revolutions during each'cycle of the machine, by imparting'a suitable rotating motion to the member 8 in a manner well understood in the art. Since the carrying member 3 is pivotally supported on the member 8, it follows that it partakes of the rotating motion of said member, 9 inclicates a seaming cam, of the inclosed or'box type, mounted above the horizontal portion 1 of the member 3 and within the upstanding flange 5. The primary function of the seaming cam is to impart an in-and-om movement to the seaming tools; and to this end, said seaming'cainand said carrying member have a relatively rotating movement with respect to each other, the effective circumferential displacement of saidzelements during each cycle of'the machine being equal to one revolution; Since the carrying member 3 rotates with the member 8, the seaming cam is, in the present instance, given, dur

' ing each cycle of the machine, a number of revolutions slightly less than that of the carrying member 3. It will be understood that the differential gearing for producing these results form no part of the present invention and need merely be referred to since they are exceedingly well understood in the art and may, of coursie,take many forms.

The seaming cam 9'is mounted on a sleeve 10, through which it receives its rotating movement, by means of a-key 11; and'the carryingmember 3 is held against the por- 11011 7 by means of agland 12, 01111 any other suitable manner that will not interfere withits swinging movement on pivot 6. 13 and let. indicate two seaming rollers, 13 being the first, and 14 the second, operation roll. Each of these rollers is mounted in a bifurcated arm lo'havi'ng suitable bearings 16,,said arm let being slidably mounted on the carrying member 3 by means of a guide 17 extending into a slot 18 and held in position by means of a stud bolt 19. It will beapparent that, by looseningthe set. screw 19 and adjusting the bifurcated member 14, the seaming roller willvbe adjusted toward and-from'the work holder to accommodate cans of different size. The seaming rollers 13 and Hare mounted beneath the carrying member 3 and substantially directly above the same are the cam rollers 20 that'extend' into the groove of the seaming cam 9. It will be noted that the seaming rollers 13 and 141 are diametrically opposite to each other and that the cam rollers 20 are disposed, in the present instance, inthe same manner. The seaming cam 9 is provided with two sets of cam portions, each setconsisting of an active portion 21,22 and an inactive por-, tion 23, 24, the arrangement being such that the active and the inactive portions are diametrically opposite to each other. The cam 9 is further provided with neutral-"portions 25 and 26 for the purpose ofmaintaining the seaming rollers, for a short period, in a neutral position substantially midway of their inner and outer positions. Each active portion 21 and 22 is provided with a dwell 27 for purposes tobe hereinafterdescribed. 28 indicates a slit in the body of the cam ad: jacent to the active portioncontrolling the second operation seaming. roll, thereby imparting a certain amount of'ielasticity to the wall of the cam'so that the second operation roller, when passing over. the' extra .thickness of metal in line with the longitudinal seam of the body of the can,'-1nay. yield slightly; and, in order to admit of this, the active portion 2 1 should have a slight clearanceat 29. i

The can to be seamed isiinsertedgin the. i

with the active'portion 21. of" the cam, cam 1 roller 20 ofythe 7 second 7 operation seaming roller 14 engaging, at theusametime, with the inactive portion 23;= Since there, is a rigid connection from theca-m i'oller's'to the carrying member 3 v and fromithe, carrying member to the seaming:rollers,it'is evident that said carrying member 3 will swing-bod ily on its pivot 6 thereby causing the-first operation roller 13 to engage'wLth the work in cam -9 produced byslit 23.

to perform the initial curling operation of the cover and cam. Owing to the dwell 27, the seaming rollers will rotate around the work for more than one revolution, preferably two, while the first operation roller is in working position, in fixed relation to center of can, there-by insuring a uniform effective curling operation. Continued rotation of seaming cam 9 will now bring cam roller 20 of the first operation seaming roller into the inactive portion 24 of the cam and cam roller 20 of the second seaming operation roller 14 into the active portion 22 of seaming cam 9. This will cause the carrying member 3 to move bodily around its pivot 6 in a direction opposite to that previously noted; and will move the first operation seaming roller outwardly and the second operation seaming roller inwardly into working position. The seaming roller 14 remains in engagement with the work, preferably during several revolutions of the carrying member 3, owing to the presence of dwell 27 previously noted; but, in addition to this, said seaming roller 14 will be per-- mitted to move outwardly when passing over the extra thickness of metalin line with the longitudinal seam of the body of the can by reason of the elastic or resilient wall It will be understood that as seaming roller 1a moves outwardly to a. slight extent, when in the position described, seaming roller 13 must move inwardly to the same extent and cam rollers 20 on both seaming rollers being rigidly con-- nected therewith, the same movement will be imparted to them. A stated, to compensate for this, the wall of the cam yields on account of slit 28, and cam roller 20 on seaming roller 13 is permitted because of the clearance 29 to move inwardly to slight extent. This operation has been described! in terms of movement of the seaming rollers but it will, of course, be understood that what actually takes place is a bodily swinging movement on the part of the carrying member 3 around pivot 6. Afterthe second operation seaming roller has completed its work, the parts will again assume the position shown in Fig. 1, and the finished can is then removed and another can substituted.

In the foregoing description of the operation of the machine, the action which takes place during one half revolution of the cam 9 only has been set forth. It will be apparent that during the remaining half of the revolution the cam roller 20 of the first seaming roller 13 will engage the inactive portion 23 and the active portion 22, while the cam roller 20 of the second seaming roller 14: will engage the active portion 21 and the inactive portion 24 of cam 9, and that no seaming operation takes place during said second half revolution.

The advantage of the construction disclosed will be apparent when it is pointed out that the elements of the carrying member 3 are in perfect balance due to the position of the tools and rollers at diametrically opposite points. This renders unnecessary extraneous balancing elements that would in crease the weight of the rotating parts. The dwell 27, which admits of the tools remaining in fixed relation in engagement with the work for a considerable period, is also of importance and is far better than constructions utilizing a constantly shifting eccentrlc in which the innermost working position of the seaming roller is practically only a momentary one. Also, the arrangement of the seaming rollers on opposite sides, instead of in clusters or groups, is an advantage in that it gives ample time for each operation during a cycle of the machine. The elastic wall, caused by the slit 28, of the sean'iing cam 9 has already been explained but it should be stated that after passing the high point due to side seam of can, the seamin; roller will immediately assume its innermost position and will continue to press the parts home. A very rigid construction of all the parts is, of course, an advantage since the whole object of the device is to apply pressure of the requisite character to sheet metal articles.

The construction whereby all of these advantages are obtained is simple in form; and, moreover, lends itself very readily to an easy method of lubrication. As here shown, the horizontal portion a of the carrying member 3 and the upstanding annular wall 5 together with the periphery of the seaming cam 9 form, in effect, an oil reservoir. This reservoir may be conveniently fed from the upper part of the machine, the oil coming down inside sleeve 10 and flowing down'through passage 30 and between the carrying member 3 and cam 9, thus reaching the reservoir. 31 indicates a passage through the carrying member 3 permitting the oil to flow to the under side thereof and thence to a channel 32, preferably centrally disposed in the support for the seaming roller; and thence outwardly through a branch passage 33 to bearing 16 of the seaming roller. It will be seen that by this method of lubrication an ample reserve supply is always available in the reservoir.

'Referring now to Fig. 3, it will be understood that this view is merely included to show how the same invention may be utilized in a machine in which the work rotates and in which, as a consequence. the seaming rollers have a simple in-and-outmovement.

In this form of the invention, it will be understood that the relatively circumferential displacement of the seaming cam 9 with reference to the carrying member 3 is effected by rotating said seaming cam 9 once during each cycle of the machine by means of sleeve 10.

Since the carrying member 3 does not rotate in this form of the invention, it is possible to pivotally support same on the pivot that extends from the framing of the ma chine. With this construction, the operation of the machine is, so far the parts relating to the invention are concerned, precisely the same as that previously described.

lclaim:

1.. Seaming mechanism comprising: a seaming cam, a carrying member, one Of said elements having a relative rotating movement with respect to the other, two seaming tools mounted diametrically opposite to each other on said carrying member, and means for successively moving the two seaming tools toward and away from the work including a pivotal support circumferopposite to eachother on said carrying mem-' her, :a pivotal support circumferentially intel-mediate the two seaming tools on wh1ch the carrying member swings bodlly, two sets of cam portions on said cam for successively actuating each seaming tool, each set consisting ofan active and an inactive portion diametrically opposite to each other, and cam rolls diametrically opposite each other and substantially in vertical line with the seaming tools.

3. Seaming mechanism comprising: a

seaming cam, a carrying member, one of said elements having a relative rotating movement with respect to the other, producing an effective circumferential displacement of said, elements with respect to each other of one revolution to each cycle of the machine, two seaming tools mounted diametrically opposite to each other'on said carrying member, a pivotal support circumterentially intermediate the two seaming tools on which the carrying member swingsbodily, two sets of cam portions on said cam for successively actuating each seaming tool, each set consisting of an active andaninactive portion diametrically oppositeto each other, one of 'saidactive cam portions bein elastic to permit its corresponding seaming tool to pass "over a raised portionon the work, and cam mediate the two seaming tools on which the carryingmember swings bodily, two sets of cam portions on said cam for successivelv actuating each seamingjtool, each set consisting of an active and an inactive portion diametrically opposite to each other, said active portion having a dwell, and cam rolls diametrically opposite each other "and substantially in vertical line with the seaming tools.

5. Seaming mechanism comprising: 'a' seaming tool having a definite in-and-out movement, a box cam controlling said movement, connections between said cam and tool, and an elastic portion on said" cam 7 formed by a slit in the body thereof to permit the tool to pass over a raised portion on the work; V f v 6. Seaming mechanism comprising; a member having a horizontal portion and an: upstanding annular flange, an annular seaming cam above said horizontal portion and within said flange forming, with said elements, an oil reservoir, seaming rollers, and lubricating means for the bearings of the rollers connected with said reservoir.

7. seaming mechanism comprising: a carrying member having a horizontal'portion and an upstanding annular flange, an annular seaming cam above said horizontal por tion and within said flange forming, with said elements, an oil reservoir, seaming-roll ers on the carrying member, means actuating the seaming rollers from the cam,andlubricating means for the'bearings of the rollers connected with said reservoir. V ,8. Seaming mechanism comprising: a member having a horizontal portion and an upstanding annular flange, an annular seaming cam above said horizontal portion and within said flange forming, with said ele 'ments, an oil reservoir, seaming rollers, lubricating means for the bearings of the rollers connected with said reservoir, and means for supplying oil to said reservoir.

9. seaming mechanism comprising: a carrying member having a horizontal portion and an upstanding annular flange, an annular seaming cam above said horizontal portion and within said flange forming, with said elements, an oil reservoir, seaming rollers on the carrying member, means actuatlng the seam ng rollers from the cam, lubricating means for the bearings of the rollers connected With said reservoir, and means for supplying oil to said reservoir.

10. Seaming mechanism comprising: a carrying member having a horizontal portion and an upstanding annular flange, an annular seaming cam above said horizontal portion and Within said flange forming, with said elements, an oil reservoir, seaming rollers on the carrying member, a sleeve 10 within said cam, means for supplying oil to said reservoir from said sleeve, and lubrieating means for the bearings of said rollers ponnected with said reservoir.

Signed at Mt. Vernon, in the county of 15 Vestchester and State of New York, this 12th day of July, 1917.

JOSEPH PEYSER. 

